Increase the maximum number of apics when running very largeconfigurations. This patch has no affect on most systems.

Signed-off-by: Jack Steiner <steiner@sgi.com>

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The patch has no effect on any 32-bit kernel. It adds ~4k to the sizeof 64-bit kernels but only if NR_CPUS > 255.

This is a repost of an earlier patch (4/16) that was implicated ina random-qa failure. I have not been able to reproduce the failureusing the same boot args & config. Best guess is that some otherpatch caused random data corruption & this patch was a victim.